<?php
function foo() {
echo "In foo()<br />\n";
}
function bar($arg = '') {
echo "In bar(); argument was '$arg'.<br />\n";
}
function echoit($string)
{
echo $string;
}
$func = 'foo';
$func(); 
$func = 'bar';
$func('test');
$func = 'echoit';
$func('test'); 
?>
